P
US9102561B2ActiveUtilityPatentIndex 51

Amorphous alloy, molding die, and method for producing optical element

Assignee: CANON KKPriority: Aug 23, 2012Filed: Aug 21, 2013Granted: Aug 11, 2015
Est. expiryAug 23, 2032(~6.1 yrs left)· nominal 20-yr term from priority
Inventors:FUKUSHIMA HIROTAKAMIDORIKAWA SATOKO
C22C 1/11C22C 45/00C22C 14/00C03B 2215/12C23C 14/0036C03B 2215/34C03B 11/086C22C 27/00C03B 2215/31C22C 27/02C03B 2215/32C22C 2204/00C23C 14/0641C03B 2215/17C22F 1/00Y02P40/57C22F 1/18
51
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References
3
Claims

Abstract

An amorphous alloy contains 54 at % or more and 79 at % or less Re, 8 at % or more and 28 at % or less Ir, and 11 at % or more and 18 at % or less Nb. A molding die includes a release film composed of the amorphous alloy. A method for producing an optical element, the method including press-molding a glass preform with the molding die.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. An amorphous alloy containing:
 54 at % or more and 79 at % or less Re; 
 8 at % or more and 28 at % or less Ir; and 
 11 at % or more and 18 at % or less Nb. 
 
     
     
       2. A molding die comprising a film composed of an amorphous alloy,
 wherein the amorphous alloy contains: 
 54 at % or more and 79 at % or less Re; 
 8 at % or more and 28 at % or less Ir; and 
 11 at % or more and 18 at % or less Nb. 
 
     
     
       3. A method for producing an optical element,
 the method including press-molding a glass preform with a molding die comprising a film composed of an amorphous alloy, 
 wherein the amorphous alloy contains: 
 54 at % or more and 79 at % or less Re; 
 8 at % or more and 28 at % or less Ir; and 
 11 at % or more and 18 at % or less Nb.

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